[libgepub] Created tag 0.5.1

[Daniel Garcia Moreno <danigm src gnome org>]

The signed tag '0.5.1' was created.

Tagger: Daniel García Moreno <danigm wadobo com>
Date: Wed Aug 9 08:34:23 2017 +0200

    Release 0.5.1

Changes since the last tag '0.5.0':

Daniel Garcia Moreno (1):
      Merge branch 'build-changes' into 'master'

Daniel García Moreno (3):
      Not freeing the archive if there was an error
      Adding GError to gepub_doc_new
      New Release 0.5.1

Iñigo Martínez (4):
      build: Changed version script
      build: Removed default compiler options
      build: Revised meson build
      build: Add meson build files as extra files